參數(shù)資料
型號(hào): ISL5216
廠商: Intersil Corporation
英文描述: Four-Channel Programmable Digital DownConverter
中文描述: 四通道可編程數(shù)字下變頻器
文件頁(yè)數(shù): 27/65頁(yè)
文件大小: 1384K
代理商: ISL5216
27
Table 1 details the phase and magnitude weighting for the 16
bits output from the PDC.
The magnitude and phase computation requires 17 clocks
for full precision. At the end of the 17 clocks, the magnitude
and phase are latched into a register to be held for the next
stage, either the output formatter or frequency discriminator.
If a new input sample arrives before the end of the 17 cycles,
the results of the computations up until that time, are
latched. This latching means that an increase in speed
causes only a decrease in accuracy. Table 2 details the exact
accuracy that can be obtained with a fixed number of clock
cycles up to the maximum of 17. The input magnitude and
phase errors induced by normal SNR values will almost
always be worse than the Cartesian to Polar conversion.
TABLE 1. MAG/PHASE BIT WEIGHTING
BIT
MAGNITUDE
PHASE (
o
)
23 (MSB)
2
2
180
22
2
1
90
21
2
0
45
20
2
-1
22.5
19
2
-2
11.25
18
2
-3
5.625
17
2
-4
2.8125
16
2
-5
1.40625
15
2
-6
0.703125
14
2
-7
0.3515625
13
2
-8
0.17578125
12
2
-9
0.087890625
11
2
-10
0.043945312
10
2
-11
0.021972656
9
2
-12
0.010986328
8
2
-13
0.005483164
7
2
-14
0.002741582
6
2
-15
0.001370791
5
2
-16
0.0006853955
4
2
-17
0.00034269775
3
2
-18
0.00017134887
2
2
-19
0.00008567444
1
2
-20
0.00004283722
0 (LSB)
2
-21
0.00002141861
TABLE 2. MAG/PHASE ACCURACY vs CLOCK CYCLES
CLOCKS
MAGNITUDE
ERROR
(% f
S
)
PHASE ER-
ROR
(DEG.)
PHASE ER-
ROR
(% f
S
)
6
0.065
3.5
2
7
0.016
1.8
1
8
0.004
0.9
0.5
9
<0.004
0.45
0.25
10
<0.004
0.22
0.12
11
<0.004
0.11
0.062
12
<0.004
0.056
0.03
13
<0.004
0.028
0.016
14
<0.004
0.014
0.008
15
<0.004
0.007
0.004
16
<0.004
0.0035
0.002
17
<0.004
0.00175
0.001
Assumes
±
180
o
= f
S
.
ISL5216
相關(guān)PDF資料
PDF描述
ISL5217EVAL1 Quad Programmable Up Converter
ISL5217KI Quad Programmable Up Converter
ISL5217 Quad Programmable Up Converter
ISL5217KIZ Quad Programmable Up Converter
ISL5314INZ Direct Digital Synthesizer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISL5216_05 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Four-Channel Programmable Digital DownConverter
ISL5216_07 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Four-Channel Programmable Digital Downconverter
ISL5216EVAL1 功能描述:EVALUATION BOARD FOR ISL5216KI RoHS:是 類別:RF/IF 和 RFID >> RF 評(píng)估和開發(fā)套件,板 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:GPS 接收器 頻率:1575MHz 適用于相關(guān)產(chǎn)品:- 已供物品:模塊 其它名稱:SER3796
ISL5216KI 功能描述:上下轉(zhuǎn)換器 QUAD DIGITAL DOWNCONVERTER,IND TEMP,0.8M RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128
ISL5216KI-1 功能描述:上下轉(zhuǎn)換器 QUAD DIGITAL DOWNCONVERTER,IND TEMP,1.OMM PITCH BGA PACKAG RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128